Destroy on blank nested attribute

Question

I would like to destroy a nested model if its attributes are blanked out in the form for the parent model - however, it appears that the ActiveRecord::Callbacks

Answer 1

With your current code it's not possible, because of the reject_if option passed to accepts_nested_attributes_for.

As Christ Mohr said, the easiest way is to set the _destroy attribute for the nested model when updating the parent, and the nested model will be destroyed. Refer to the docs for more info on this, or this railscast.

Or you can use a gem like cocoon, or awesome_nested_fields.

To do specifically what you want, you should remove the reject_if option, and handle the logic in a callback inside the parent object. It should check for blank values in the tour_dates_attributes and destroy the nested model. But tread carefully...